Only the Kyoto arc is free of filler, and even it drags things on a bit. The original manga gets long-winded at many points. The entire story doesn't need to be that long, but compared to the anime the manga's very fast-paced.

If only the Jinchuu arc is animated, I'll have to go find decent copies of the original anime and sort out which episodes I can throw away based on what didn't appear in the manga...

Edit: Also please for the love of the FSM bring back the original composer. The RK anime had some beautiful acoustic guitar tracks! The whole soundtrack was wonderful.